1//===----------------------------------------------------------------------===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is dual licensed under the MIT and the University of Illinois Open
6// Source Licenses. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9
10// <unordered_map>
11
12// template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
13//           class Alloc = allocator<pair<const Key, T>>>
14// class unordered_multimap
15
16// unordered_multimap(initializer_list<value_type> il, size_type n,
17//               const hasher& hf, const key_equal& eql, const allocator_type& a);
18
19#include <unordered_map>
20#include <string>
21#include <cassert>
22#include <cfloat>
23#include <cmath>
24#include <cstddef>
25
26#include "test_macros.h"
27#include "../../../test_compare.h"
28#include "../../../test_hash.h"
29#include "test_allocator.h"
30#include "min_allocator.h"
31
32int main()
33{
34#ifndef _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS
35    {
36        typedef std::unordered_multimap<int, std::string,
37                                   test_hash<std::hash<int> >,
38                                   test_compare<std::equal_to<int> >,
39                                   test_allocator<std::pair<const int, std::string> >
40                                   > C;
41        typedef std::pair<int, std::string> P;
42        C c({
43                P(1, "one"),
44                P(2, "two"),
45                P(3, "three"),
46                P(4, "four"),
47                P(1, "four"),
48                P(2, "four"),
49            },
50            7,
51            test_hash<std::hash<int> >(8),
52            test_compare<std::equal_to<int> >(9),
53            test_allocator<std::pair<const int, std::string> >(10)
54           );
55        LIBCPP_ASSERT(c.bucket_count() == 7);
56        assert(c.size() == 6);
57        typedef std::pair<C::const_iterator, C::const_iterator> Eq;
58        Eq eq = c.equal_range(1);
59        assert(std::distance(eq.first, eq.second) == 2);
60        C::const_iterator i = eq.first;
61        assert(i->first == 1);
62        assert(i->second == "one");
63        ++i;
64        assert(i->first == 1);
65        assert(i->second == "four");
66        eq = c.equal_range(2);
67        assert(std::distance(eq.first, eq.second) == 2);
68        i = eq.first;
69        assert(i->first == 2);
70        assert(i->second == "two");
71        ++i;
72        assert(i->first == 2);
73        assert(i->second == "four");
74
75        eq = c.equal_range(3);
76        assert(std::distance(eq.first, eq.second) == 1);
77        i = eq.first;
78        assert(i->first == 3);
79        assert(i->second == "three");
80        eq = c.equal_range(4);
81        assert(std::distance(eq.first, eq.second) == 1);
82        i = eq.first;
83        assert(i->first == 4);
84        assert(i->second == "four");
85        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
86        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
87        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
88        assert(c.max_load_factor() == 1);
89        assert(c.hash_function() == test_hash<std::hash<int> >(8));
90        assert(c.key_eq() == test_compare<std::equal_to<int> >(9));
91        assert((c.get_allocator() == test_allocator<std::pair<const int, std::string> >(10)));
92    }
93#if TEST_STD_VER >= 11
94    {
95        typedef std::unordered_multimap<int, std::string,
96                                   test_hash<std::hash<int> >,
97                                   test_compare<std::equal_to<int> >,
98                                   min_allocator<std::pair<const int, std::string> >
99                                   > C;
100        typedef std::pair<int, std::string> P;
101        C c({
102                P(1, "one"),
103                P(2, "two"),
104                P(3, "three"),
105                P(4, "four"),
106                P(1, "four"),
107                P(2, "four"),
108            },
109            7,
110            test_hash<std::hash<int> >(8),
111            test_compare<std::equal_to<int> >(9),
112            min_allocator<std::pair<const int, std::string> >()
113           );
114        LIBCPP_ASSERT(c.bucket_count() == 7);
115        assert(c.size() == 6);
116        typedef std::pair<C::const_iterator, C::const_iterator> Eq;
117        Eq eq = c.equal_range(1);
118        assert(std::distance(eq.first, eq.second) == 2);
119        C::const_iterator i = eq.first;
120        assert(i->first == 1);
121        assert(i->second == "one");
122        ++i;
123        assert(i->first == 1);
124        assert(i->second == "four");
125        eq = c.equal_range(2);
126        assert(std::distance(eq.first, eq.second) == 2);
127        i = eq.first;
128        assert(i->first == 2);
129        assert(i->second == "two");
130        ++i;
131        assert(i->first == 2);
132        assert(i->second == "four");
133
134        eq = c.equal_range(3);
135        assert(std::distance(eq.first, eq.second) == 1);
136        i = eq.first;
137        assert(i->first == 3);
138        assert(i->second == "three");
139        eq = c.equal_range(4);
140        assert(std::distance(eq.first, eq.second) == 1);
141        i = eq.first;
142        assert(i->first == 4);
143        assert(i->second == "four");
144        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
145        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
146        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
147        assert(c.max_load_factor() == 1);
148        assert(c.hash_function() == test_hash<std::hash<int> >(8));
149        assert(c.key_eq() == test_compare<std::equal_to<int> >(9));
150        assert((c.get_allocator() == min_allocator<std::pair<const int, std::string> >()));
151    }
152    {
153        typedef explicit_allocator<std::pair<const int, std::string>> A;
154        typedef std::unordered_multimap<int, std::string,
155                                   test_hash<std::hash<int> >,
156                                   test_compare<std::equal_to<int> >,
157                                   A
158                                   > C;
159        typedef std::pair<int, std::string> P;
160        C c({
161                P(1, "one"),
162                P(2, "two"),
163                P(3, "three"),
164                P(4, "four"),
165                P(1, "four"),
166                P(2, "four"),
167            },
168            7,
169            test_hash<std::hash<int> >(8),
170            test_compare<std::equal_to<int> >(9),
171            A{}
172           );
173        LIBCPP_ASSERT(c.bucket_count() == 7);
174        assert(c.size() == 6);
175        typedef std::pair<C::const_iterator, C::const_iterator> Eq;
176        Eq eq = c.equal_range(1);
177        assert(std::distance(eq.first, eq.second) == 2);
178        C::const_iterator i = eq.first;
179        assert(i->first == 1);
180        assert(i->second == "one");
181        ++i;
182        assert(i->first == 1);
183        assert(i->second == "four");
184        eq = c.equal_range(2);
185        assert(std::distance(eq.first, eq.second) == 2);
186        i = eq.first;
187        assert(i->first == 2);
188        assert(i->second == "two");
189        ++i;
190        assert(i->first == 2);
191        assert(i->second == "four");
192
193        eq = c.equal_range(3);
194        assert(std::distance(eq.first, eq.second) == 1);
195        i = eq.first;
196        assert(i->first == 3);
197        assert(i->second == "three");
198        eq = c.equal_range(4);
199        assert(std::distance(eq.first, eq.second) == 1);
200        i = eq.first;
201        assert(i->first == 4);
202        assert(i->second == "four");
203        assert(static_cast<std::size_t>(std::distance(c.begin(), c.end())) == c.size());
204        assert(static_cast<std::size_t>(std::distance(c.cbegin(), c.cend())) == c.size());
205        assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
206        assert(c.max_load_factor() == 1);
207        assert(c.hash_function() == test_hash<std::hash<int> >(8));
208        assert(c.key_eq() == test_compare<std::equal_to<int> >(9));
209        assert(c.get_allocator() == A{});
210    }
211#endif
212#endif  // _LIBCPP_HAS_NO_GENERALIZED_INITIALIZERS
213}
214